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If you know matrix algebra, the process is simply to find the inverse for the matrix of coefficients and apply that to the vector of answers.

If you don't:

You solve these in the same way as you would solve a pair of simultaneous linear equations in two unknowns - either by substitution or elimination.

For example, change the subject of one of the equations to express one of the variables in terms of the other two. Substitute this value into the other two equations. When simplified, you will have two linear equations in two variables.

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โˆ™ 2012-02-13 10:06:25
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A polynomial of degree zero is a constant term

The grouping method of factoring can still be used when only some of the terms share a common factor A True B False

The sum or difference of p and q is the of the x-term in the trinomial

A number a power of a variable or a product of the two is a monomial while a polynomial is the of monomials

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Q: How do you solve a system of equation with 3 equations and 3 variables?
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What is usually the first step in solving a system of equation by substitution?

The first step is to solve one of the equations for one of the variables. This is then substituted into the other equation or equations.


Translate this word problem as a system of equations and then solve using substitution?

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How doI solve system of equations by substitution?

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